{"product_id":"scg13819-germany-berlin-1971-hermann-von-helmholtz-25-pfennig","title":"SCG13819 - Germany (Berlin) 1971 – Hermann von Helmholtz 25 Pfennig","description":"\u003cp data-start=\"108\" data-end=\"747\"\u003e\u003cem\u003eThis commemorative stamp from Berlin (Deutsche Bundespost Berlin) honors the renowned German scientist Hermann von Helmholtz (1821–1894), a key figure in physics and physiology. Issued in 1971, the stamp features a dignified portrait set against a subtle scientific background, reflecting his contributions to energy conservation, optics, and acoustics. The muted color palette and detailed engraving style give it a classic scholarly appeal. As part of Berlin issues during the Cold War era, it also holds historical postal significance. A must-have for collectors of science-themed philately and German commemoratives.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"749\" data-end=\"838\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e \u003c\/p\u003e","brand":"Stamp and Cover Galaxy","offers":[{"title":"Default Title","offer_id":46365749477547,"sku":null,"price":20.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/2406\/6475\/files\/Scan_20260326_149__20.jpg?v=1774682507","url":"https:\/\/stampandcovergalaxy.com\/products\/scg13819-germany-berlin-1971-hermann-von-helmholtz-25-pfennig","provider":"Stamp and Cover Galaxy","version":"1.0","type":"link"}